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Layered material GeSe and vertical GeSe/MoS2 p-n heterojunctions

Nano Research 2018年第1期11卷 420-430页

作者： wui chung yap Zhengfeng Yang Mehrshad Mehboudi Jia-An Yan Salvador Barraza-Lopez Wenjuan Zhu Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign Urbana IL 6180 I USA Department of Physics University of Arkansas Fayetteville AR 72701 USA Department of Physics Astronomy & Geosciences Towson University Towson MD 21252 USA

GroupqV monochalcogenides are emerging as a new class of layered materials beyond graphene, transition metal dichalcogenides （TMDCs）, and black phosphorus （BP）. In this paper, we report experimental and theoretical investigations of the band structure and transport properties of GeSe and its heterostructures. We find that GeSe exhibits a markedly anisotropic electronic transport, with maximum conductance along the armchair direction. Density functional theory calculations reveal that the effective mass is 2.7 times larger along the zigzag direction than the armchair direction; this mass anisotropy explains the observed anisotropic conductance. The crystallographic orientation of GeSe is confirmed by angle- resolved polarized Raman measurements, which are further supported by calculated Raman tensors for the orthorhombic structure. Novel GeSeflVIoS2 p-n heterojunctions are fabricated, combining the natural p-type doping in GeSe and n-type doping in MoS2. The temperature dependence of the measured junction current reveals that GeSe and MoS2 have a type-II band alignment with a conduction band offset of N 0.234 eV. The anisotropic conductance of GeSe may enable the development of new electronic and optoelectronic devices, such as high-efficiency thermoelectric devices and plasmonic devices with resonance frequency continuously tunable through light polarization direction. The unique GeSe/MoS2 p-n junctions with type-II alignment may become essential building blocks of vertical tunneling field-effect transistors for low-power applications. The novel p-type layered material GeSe can also be combined with n-type TMDCs to form heterogeneous complementary metal oxide semiconductor （CMOS） circuits.

关键词： monochalcogenides germanium selenide anisotropic conductance polarized Raman p-n heterojunction

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Efficacy and safety of anti-vascular endothelial growth factor agents on corneal neovascularization: A meta-analysis

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World Journal of Clinical Cases 2023年第30期11卷 7337-7349页

作者： Shih-chung Lai El-wui Loh Du-I Chiou Chien-Tai Hong Department of Ophthalmology Shuang Ho HospitalNew Taipei City 23561TaiwanChina Center for Evidence-Based Health Care Department of Medical ResearchTaipei Medical University Shuang Ho HospitalNew Taipei City 23561TaiwanChina Cochrane Taiwan Taipei Medical UniversityTaipei 110TaiwanChina Graduate Institute of Clinical Medicine College of MedicineTaipei Medical UniversityTaipei 110TaiwanChina Department of Medical Imaging Taipei Medical University Shuang Ho HospitalNew Taipei City 23561TaiwanChina Department of Neurology Taipei Medical University-Shuang Ho HospitalNew Taipei 23561TaiwanChina

BACKGROUND Corneal neovascularization(CoNV)is the second major cause of *** endothelial growth factor(VEGF)inhibitors,e.g.,bevacizumab,have been used to prevent *** We conducted an updated systematic review and meta-analysis of clinical trials to examine the efficacy and safety of anti-VEGF in *** A literature search was conducted using three electronic *** difference(MD),standard mean difference(SMD),and relative risk(RR)are used to estimate the effect *** Nine randomized controlled and three non-randomized trials were *** pooled results demonstrated a significant reduction of CoNV area/Length(SMD=-1.17,95%CI:-1.58 to-0.75),best corrected visual acuity(MD=-0.54,95%CI:-0.91 to-0.17),and graft rejection(RR=0.44,95%CI:0.24 to 0.8)and failure(RR=0.39,95%CI:0.19 to 0.78)rates in the anti-VEGF group than the placebo group.A non-significant reduction of the epithelial defect was also observed in the bevacizumab group compared with the placebo(RR=0.56,95%CI:0.30 to 1.06).Compared with a placebo,the unsynthesizable trials also support that bevacizumab improves visual acuity,CoNV,graft rejection,and failure *** reporting other comparisons revealed the superiority of combined remedy with bevacizumab compared to other treatments in reducing *** Anti-VEGF agents,mainly bevacizumab,are an effective and safe treatment for CoNV of all causes and prevent corneal graft rejection and failure in corneal transplantation.

关键词： Efficacy Safety Anti-vascular endothelial growth factor agents Corneal neovascularization Bevacizumab

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髋臼加强杯的应用原则和手术技术(英文)

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中国矫形外科杂志 2008年第22期16卷 1700-1704页

作者： wui K.chung 澳大利亚金斯伍德市Nepean私立医院关节置换与重建中心

本文介绍了髋臼假体翻修术中不同程度髋臼骨质缺损的处理原则,探讨了生物固定型假体、骨水泥型假体、异型假体、大块同种异体骨移植、髋臼加强杯的手术适应证及临床效果。重点介绍了髋臼加强杯(ARR)的常见类型和选择原则、手术技术要点... 详细信息

本文介绍了髋臼假体翻修术中不同程度髋臼骨质缺损的处理原则,探讨了生物固定型假体、骨水泥型假体、异型假体、大块同种异体骨移植、髋臼加强杯的手术适应证及临床效果。重点介绍了髋臼加强杯(ARR)的常见类型和选择原则、手术技术要点、常见手术技术错误等。

关键词：髋臼加强杯关节置换治疗原则

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Rectal arterio-portal fistula: An unusual cause of persistent bleeding per rectum following a proximal spleno-renal shunt

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World Journal of Gastroenterology 2013年第25期19卷 4087-4090页

作者： Hao Yun yap Ser Yee Lee Yaw Fui Alexander chung Kiang Hiong Tay Albert Su-Chong Low Choon Hua Thng Krishnakumar Madhavan Department of General Surgery Singapore General Hospital Department of Surgical Oncology National Cancer Centre Singapore Department of Diagnostic Radiology Singapore General Hospital Department of Oncologic Imaging National Cancer Centre Singapore Department of General Surgery National University Hospital Singapore

Gastrointestinal arterio-venous malformations are a known cause of gastrointestinal bleeding. We present a rare case of persistent rectal bleeding due to a rectal arterio-portal venous fistula in the setting of portal hypertension secondary to portal vein thrombosis. The portal hypertension was initially surgically treated with splenectomy and a proximal splenorenal shunt. However, rectal bleeding persisted even after surgery, presenting us with a diagnostic dilemma. The patient was re-evaluated with a computed tomography mesenteric angiogram which revealed a rectal arterio-portal fistula. Arterio-portal fistulas are a known but rare cause of portal hypertension, and possibly the underlying cause of continued rectal bleeding in this case. This was successfully treated using angiographic localizationand super-selective embolization of the rectal arterioportal venous fistula via the right internal iliac artery. The patient subsequently went on to have a full term pregnancy. Through this case report, we hope to high-light awareness of this unusual condition, discuss the diagnostic workup and our management approach.

关键词： Portal hypertension Esophageal varices Splenorenal shunt Arteriovenous malformations Portal vein thrombosis

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Lycium barbarum polysaccharides promotes in vivo proliferation of adult rat retinal progenitor cells

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Neural Regeneration Research 2015年第12期10卷 1976-1981页

作者： Hua Wang Benson wui-Man Lau Ning-li Wang Si-ying Wang Qing-jun Lu Raymond Chuen-chung Chang Kwok-fai So Beijing Tongren Eye Center Beijing Tongren HospitalCapital Medical University Beijing Ophthalmology & Visual Sciences Key Laboratory Department of Rehabilitation Science The Hong Kong Polytechnic University Department of Anatomy Li Ka Shing Faculty of MedicineThe University of Hong KongPokfulam The State Key Laboratory of Brain and Cognitive Sciences The University of Hong Kong Research Centre of Heart BrainHormone and Healthy AgingFaculty of MedicineThe University of Hong Kong Department of Ophthalmology Li Ka Shing Faculty of MedicineThe University of Hong KongPokfulam GMH Institute of Central Nervous System Regeneration Jinan University

Lycium barbarum is a widely used Chinese herbal medicine prescription for protection of optic ***,it remains unclear regarding the effects of Lycium barbarum polysaccharides,the main component of Lycium barbarum,on in vivo proliferation of adult ciliary body *** this study,adult rats were intragastrically administered low-and high-dose Lycium barbarum polysaccharides（1 and 10 mg/kg）for 35 days and those intragastrically administered phosphate buffered saline served as *** number of Ki-67-positive cells in rat ciliary body in the Lycium barbarum polysaccharides groups,in particular low-dose Lycium barbarum polysaccharides group,was significantly greater than that in the phosphate buffered saline ***-67-positive rat ciliary body cells expressed nestin but they did not express glial fibrillary acidic *** findings suggest that Lycium barbarum polysaccharides can promote the proliferation of adult rat retinal progenitor cells and the proliferated cells present with neuronal phenotype.

关键词： nerve regeneration traditional Chinese medicine Lycium barbarum polysaccharides Lycium barbarum (wolJberry) retinal disease neurogenesis adult neural regeneration

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混合型人工全髋关节置换术治疗老年股骨颈骨折(英文)

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中华急诊医学杂志 2004年第8期13卷 509-512,i001页

作者：戴雪松 wui K.chung 浙江大学医学院附属第二医院骨科澳大利亚悉尼Nepean关节重建外科中心

目的　随访一组经混合型全髋关节置换术的股骨颈骨折老年的患者 ,了解骨水泥型股骨假体和非骨水泥型髋臼假体的组合应用于健康和骨质质量较差的老年患者的情况。方法　 4 1名患者得到临床和影像学随访。随访内容包括老年患者的健康状况... 详细信息

目的　随访一组经混合型全髋关节置换术的股骨颈骨折老年的患者 ,了解骨水泥型股骨假体和非骨水泥型髋臼假体的组合应用于健康和骨质质量较差的老年患者的情况。方法　 4 1名患者得到临床和影像学随访。随访内容包括老年患者的健康状况、手术方法、术后恢复情况以及对于骨形态、骨水泥固定质量和假体稳定性。结果　未出现与骨水泥相关的术中和或术后死亡 ,各类全身性疾病在围手术期无加重表现。Harris评分为 81 1分。股骨近端骨形态A型占 2 0 % ,B型 5 6 % ,C型 2 4 %。骨水泥固定质量分为A级 37% ,B级 4 9% ,C级 4 %。结论　混合型人工关节置换术对老年股骨颈骨折患者较为适用。混合型人工关节的术后即时稳定性有利于老年患者的康复。在手术中必须应用现代骨水泥技术。

关键词：混合型人工全髋关节置换术治疗老年股骨颈骨折骨水泥型股骨假体非骨水泥型髋臼假体

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应用于前沿技术节点的集成生产覆盖逐场控制

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中国集成电路 2016年第7期25卷 69-75页

作者： Woong Jae chung John Tristan Karsten Gutjahr Lokesh Subramany Chen Li Yulei Sun Mark Yelverton Young Ki Kim Jeong Soo Kim Chin-Chou Kevin Huang William Pierson Ramkumar Karur-Shanmugam Brent Riggs Sven Jug John C.Robinson Lipkong yap Vidya Ramanathan GLOBALFOUNDRIES 400 Stone Break Road Extension Malta NY 12020 USA KLA-Tencor corp. 1 Technology Drive Milpitas CA 95035 USA

随着前沿HVM流程节点中不断应用光刻和193nm浸没式多重图形技术,逻辑设备的关键层生产覆盖要求几乎已经达到了扫描仪硬件性能的极限。为了满足HVM生产环境极端覆盖的要求,本次研究调查了前沿技术节点的一个新集成覆盖控制构想,它将运行... 详细信息

随着前沿HVM流程节点中不断应用光刻和193nm浸没式多重图形技术,逻辑设备的关键层生产覆盖要求几乎已经达到了扫描仪硬件性能的极限。为了满足HVM生产环境极端覆盖的要求,本次研究调查了前沿技术节点的一个新集成覆盖控制构想,它将运行到运行(R2R)线性或高阶控制回路、周期逐场或每曝光校正(CPE)晶圆流程标记控制回路,以及扫描仪基线控制回路结合,应用到晶圆厂主机APC系统的一个单一集成覆盖控制路径。目标是满足晶圆厂的覆盖性能要求、降低总拥有成本,并提供自由的控制方法。本文将讨论此构想的一个详细实施案例,以及一些初步的结果。

关键词：覆盖 CPE 残余扫描仪覆盖控制逐场校正每曝光校正基线控制

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